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NEHA study guide Questions and Correct
Answers | Latest Update
What is the MOST common cause of bacterial meningitis in children under five years of
age?
a. Neisseria meningitides
b. Group B Streptococci
c. Streptococcus pneumoniae
d. Haemophilius influenzea type B
✓ -:- d. Haemophilius influenza type B
How is "giardiasis USUALLY transmitted to others?
a. Person-to-person transfer of cysts from the feces of the infected individual.
b. Drinking unfiltered water from streams and lakes.
c. Drinking unboiled water from streams and lakes.
d. Drinking inadequately chlorinated water from a municipal water distribution system.
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,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
✓ -:- a. Person-to-person transfer of cysts from the feces of the infected
individual.
Which of the following duties of state and local health agencies is intended to ensure that
the public's health and welfare are protected?
a. Community-intensive planning.
b. Statutory administrative action.
c. Regulatory responsibilities.
d. Plan implementation.
✓ -:- c. Regulatory responsibilities.
Which of the following is a measure of the amount of light scattered by particles suspended
in a water test sample?
a. Formazin Turbidity Units (FTU)
b. Nephelometric Turbidity Units (NTU)
c. Hydrosyntalic Turbidity Units (HTU)
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d. Lorcetic Turbidity Units (LTU)
✓ -:- b. Nephelometric Turbidity Units (NTU)
What is an epidemic?
a. The constant presence of a disease within a community or region.
b. The presence of an infectious agent on the body surface.
c. The presence of infection in a host without clear, recognizable clinic symptoms.
d. The occurrence in a community or region of cases of an illness clearly in excess of
expectancy.
✓ -:- d. The occurrence in a community or region of cases of an illness
clearly in excess of expectancy.
What portal of entry should a field sanitarian protect to avoid contracting Lyme disease?
a. Skin
b. Respiratory tract
c. Reproductive organs
3|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
d. Digestive tract
✓ -:- a. Skin
Swimmer's itch is a common name for which of the following diseases?
a. Leptospirosis
b. Subdural dermatitis
c. Schistosomiasis
d. Trichiniasis
✓ -:- c. Schistosomiasis
Which of the following factors would LEAST contribute to the emergence of new infectious
disease?
a. Human behavior
b. Heat disinfection
c. Antibiotic use
d. Disinfectant use
4|P a g e | G r a d e A + | 2 0 2 0 2 5
NEHA study guide Questions and Correct
Answers | Latest Update
What is the MOST common cause of bacterial meningitis in children under five years of
age?
a. Neisseria meningitides
b. Group B Streptococci
c. Streptococcus pneumoniae
d. Haemophilius influenzea type B
✓ -:- d. Haemophilius influenza type B
How is "giardiasis USUALLY transmitted to others?
a. Person-to-person transfer of cysts from the feces of the infected individual.
b. Drinking unfiltered water from streams and lakes.
c. Drinking unboiled water from streams and lakes.
d. Drinking inadequately chlorinated water from a municipal water distribution system.
1|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
✓ -:- a. Person-to-person transfer of cysts from the feces of the infected
individual.
Which of the following duties of state and local health agencies is intended to ensure that
the public's health and welfare are protected?
a. Community-intensive planning.
b. Statutory administrative action.
c. Regulatory responsibilities.
d. Plan implementation.
✓ -:- c. Regulatory responsibilities.
Which of the following is a measure of the amount of light scattered by particles suspended
in a water test sample?
a. Formazin Turbidity Units (FTU)
b. Nephelometric Turbidity Units (NTU)
c. Hydrosyntalic Turbidity Units (HTU)
2|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
d. Lorcetic Turbidity Units (LTU)
✓ -:- b. Nephelometric Turbidity Units (NTU)
What is an epidemic?
a. The constant presence of a disease within a community or region.
b. The presence of an infectious agent on the body surface.
c. The presence of infection in a host without clear, recognizable clinic symptoms.
d. The occurrence in a community or region of cases of an illness clearly in excess of
expectancy.
✓ -:- d. The occurrence in a community or region of cases of an illness
clearly in excess of expectancy.
What portal of entry should a field sanitarian protect to avoid contracting Lyme disease?
a. Skin
b. Respiratory tract
c. Reproductive organs
3|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
d. Digestive tract
✓ -:- a. Skin
Swimmer's itch is a common name for which of the following diseases?
a. Leptospirosis
b. Subdural dermatitis
c. Schistosomiasis
d. Trichiniasis
✓ -:- c. Schistosomiasis
Which of the following factors would LEAST contribute to the emergence of new infectious
disease?
a. Human behavior
b. Heat disinfection
c. Antibiotic use
d. Disinfectant use
4|P a g e | G r a d e A + | 2 0 2 0 2 5
